Finding the Fourth Proportional to 691,514.40, 953,878.62 and 538,310.09
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Solution
The fourth proportional to 691,514.40, 953,878.62 and 538,310.09 is: 742,547.78
Step by Step Solution
- Step 1: Write the proportion equation
691,514.40 : 953,878.62 = 538,310.09 : x - Step 2: Convert to fraction form
691,514.40/953,878.62 = 538,310.09/x - Step 3: Cross multiply
691,514.40x = 953,878.62 × 538,310.09 - Step 4: Simplify right side
691,514.40x = 513,482,481,011.88 - Step 5: Solve for x
x = 513,482,481,011.88/691,514.40 - Step 6: Final answer
x = 742,547.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.